Comparison

HOOC Client vs CTA Go

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

HOOC Client

Read full description

The HOOC Client for iOS - as a part of the HOOC Solution - enables you to connect to the Services configured in the HOOC management portal like for example Secure Remote Access (SERA). Configured installations and their services are shown in the client under your account and can be comfortably used from within the client.

About

CTA Go

Features

Read full description

Mit CTA Go können Sie Ihre Wärmepumpe ganz einfach von Ihrem Smartphone aus steuern. Sie können Sollwerteinstellungen verwalten und erhalten Alarmmeldungen sollte ein Fehler auftreten. Hinweis! Diese Anwendung erfordert eine Inbetriebnahme durch einen Servicetechniker der CTA.

Screenshots

HOOC Client4 screens

CTA Go4 screens

Verdict

The call

The clearest difference is update cadence: HOOC Client at every 4 months against CTA Go's every 15 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HOOC Client ships an update every 4 months, CTA Go every 15 months. The most recent releases landed on September 18, 2026 and September 5, 2026 respectively.

Scorecard1 real difference · 5 level

HOOC Client versus CTA Go: the parameters behind the verdict, then further details
Parameter	HOOC Client	CTA Go
Price	Free	Free
Update frequency	Every 4 months — better	Every 15 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod, Mac — better	iPhone, iPad, iPod
Requires iOS	13.1	13.0 — better
Further details — not scored
Size	7 MB	27 MB
Age rating	4+	4+
Developer	HOOC AG	CTA AG

In-app purchases

None

HOOC Client

No in-app purchases

None

CTA Go

No in-app purchases

Questions

Is HOOC Client free?

HOOC Client is free to download, with no in-app purchases.

Is CTA Go free?

CTA Go is free to download, with no in-app purchases.

Do HOOC Client or CTA Go have ads?

Neither HOOC Client nor CTA Go shows ads.

Which is updated more often, HOOC Client or CTA Go?

HOOC Client ships an update every 4 months, and CTA Go every 15 months. Most recently, HOOC Client was updated on September 18, 2026 and CTA Go on September 5, 2026.